The temperature of the low-temperature methanol washing system is high
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The bottom of the low-temperature methanol wash tower is affected; the temperature inside the tower is normal, while the temperature at the outlet of the purification section is high. Increasing the load on the ammonia cooler has no significant effect, and the pressure difference across the tower decreases, which rules out the possibility of gas blockage. Increasing the amount of methanol in circulation also yields no result; the water content in the methanol is within normal limits. To maintain the temperature at the outlet of the purification section, the amount of ammonia used was increased to twice the level used under previous operating conditions, but this still had no noticeable effect. What could be the reason?
What’s the situation here? Have you resolved it yet? Is the CO2 content high?
Pay attention to whether the nitrogen lift amount in the flash tower matches the system load, and also pay attention to the methanol-water content at the bottom of the thermal regeneration tower.
Is there a problem with the trays in the scrubber tower, resulting in poor heat exchange?
Is there a problem with the inter-stage heat exchanger?
Is the regeneration tower operating properly? What should be the pressure control in the stripping tower? Cooling capacity distribution problem